Swift Package IndexBuild Information
Failed to build Assertions, reference main (c815e2), with Swift 6.3 for Android on 16 Apr 2026 21:23:15 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1Build Log
========================================
RunAll
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Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/harlanhaskins/assertions.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/harlanhaskins/assertions
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at c815e2c Initial commit
Cloned https://github.com/harlanhaskins/assertions.git
Revision (git rev-parse @):
c815e2cff666d1cbe603e782ab01dfe2f39c1f73
SUCCESS checkout https://github.com/harlanhaskins/assertions.git at main
========================================
Build
========================================
Selected platform: android
Swift version: 6.3
Building package at path: $PWD
https://github.com/harlanhaskins/assertions.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:9008270ea37a55e78725e6225015adb5eff8582da520c5232bf0499f32c36dc4
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:android-6.3-latest
Fetching https://github.com/apple/swift-collections
[1/23551] Fetching swift-collections
Fetched https://github.com/apple/swift-collections from cache (1.48s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.4.1 (2.05s)
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.4.1
Building for debugging...
[0/11] Write sources
[10/11] Write swift-version--4F562202D5529B1.txt
[12/29] Emitting module InternalCollectionsUtilities
[13/31] Compiling InternalCollectionsUtilities LifetimeOverride.swift
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[26/31] Compiling InternalCollectionsUtilities Debugging.swift
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[28/31] Compiling InternalCollectionsUtilities FixedWidthInteger+roundUpToPowerOfTwo.swift
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[30/31] Compiling InternalCollectionsUtilities UInt+first and last set bit.swift
[31/31] Compiling InternalCollectionsUtilities UInt+reversed.swift
[33/40] Compiling HeapModule Heap+ExpressibleByArrayLiteral.swift
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[76/332] Emitting module HeapModule
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[96/380] Compiling HashTreeCollections TreeSet+SetAlgebra isDisjoint.swift
[97/380] Compiling DequeModule Deque+Testing.swift
[98/380] Compiling DequeModule Deque._Storage.swift
[99/380] Compiling DequeModule Deque._UnsafeHandle.swift
[100/380] Compiling DequeModule Deque.swift
[101/380] Compiling DequeModule Deque+Codable.swift
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[111/397] Compiling _RopeModule Rope.swift
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[120/397] Compiling BitCollections BitSet.Index.swift
[121/397] Emitting module BitCollections
[122/397] Compiling DequeModule Deque+Equatable.swift
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[124/397] Compiling DequeModule UniqueDeque+Consumption.swift
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[166/402] Compiling DequeModule UniqueDeque+Append.swift
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[202/402] Compiling DequeModule Deque+Hashable.swift
[203/402] Compiling HashTreeCollections TreeSet+SetAlgebra isEqualSet.swift
[204/402] Compiling HashTreeCollections TreeSet+SetAlgebra isStrictSubset.swift
[205/402] Compiling HashTreeCollections TreeSet+SetAlgebra isStrictSuperset.swift
[206/402] Compiling HashTreeCollections TreeSet+SetAlgebra isSubset.swift
[207/402] Compiling HashTreeCollections TreeSet+SetAlgebra isSuperset.swift
[208/402] Compiling HashTreeCollections TreeSet+SetAlgebra subtract.swift
[209/402] Compiling HashTreeCollections TreeSet+SetAlgebra subtracting.swift
[210/402] Compiling HashTreeCollections TreeSet+SetAlgebra symmetricDifference.swift
[211/402] Compiling HashTreeCollections TreeSet+SetAlgebra union.swift
[212/402] Compiling HashTreeCollections TreeSet.swift
[217/402] Compiling OrderedCollections OrderedSet+Sendable.swift
[218/402] Compiling OrderedCollections OrderedSet+SubSequence.swift
[219/402] Compiling OrderedCollections OrderedSet+Testing.swift
[220/402] Compiling OrderedCollections OrderedSet+UnorderedView.swift
[221/402] Compiling OrderedCollections OrderedSet+UnstableInternals.swift
[228/411] Compiling OrderedCollections OrderedSet.swift
[273/412] Compiling OrderedCollections _UnsafeBitset.swift
[274/412] Compiling _RopeModule BigString+Comparable.swift
[275/412] Compiling _RopeModule BigString+CustomDebugStringConvertible.swift
[276/412] Compiling _RopeModule BigString+CustomStringConvertible.swift
[277/412] Compiling _RopeModule BigString+Equatable.swift
[334/412] Emitting module _RopeModule
[335/412] Emitting module OrderedCollections
[373/413] Emitting module HashTreeCollections
[405/414] Emitting module DequeModule
[407/415] Compiling _RopeModule Rope+Join.swift
[408/415] Compiling _RopeModule Rope+MutatingForEach.swift
[409/415] Compiling _RopeModule Rope+Remove.swift
[410/415] Compiling _RopeModule Rope+RemoveSubrange.swift
[411/415] Compiling _RopeModule Rope+Split.swift
[412/415] Compiling _RopeModule Optional Utilities.swift
[413/415] Compiling _RopeModule String Utilities.swift
[414/415] Compiling _RopeModule String.Index+ABI.swift
[415/415] Compiling _RopeModule _CharacterRecognizer.swift
[417/422] Compiling Collections HashTreeCollections reexports.swift
[418/422] Compiling Collections DequeModule reexports.swift
[419/422] Compiling Collections BitCollections reexports.swift
[420/422] Emitting module Collections
[421/422] Compiling Collections OrderedCollections reexports.swift
[422/422] Compiling Collections HeapModule reexports.swift
[424/428] Compiling Assertions UUID+ShortID.swift
[425/428] Compiling Assertions AssertionValue.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[426/428] Emitting module Assertions
/host/spi-builder-workspace/Sources/Assertions/AssertionManager.swift:50:2: error: unknown attribute 'Observable'
48 | /// AssertionManager is `@Observable` so clients can observe the state of `value`. To receive synchronous updates,
49 | /// register yourself as the `delegate` instead.
50 | @Observable
| `- error: unknown attribute 'Observable'
51 | public final class AssertionManager<Value: AssertionValue>: CustomStringConvertible, AssertionManaging {
52 | struct ActiveAssertion {
[427/428] Compiling Assertions Assertion.swift
[428/428] Compiling Assertions AssertionManager.swift
/host/spi-builder-workspace/Sources/Assertions/AssertionManager.swift:50:2: error: unknown attribute 'Observable'
48 | /// AssertionManager is `@Observable` so clients can observe the state of `value`. To receive synchronous updates,
49 | /// register yourself as the `delegate` instead.
50 | @Observable
| `- error: unknown attribute 'Observable'
51 | public final class AssertionManager<Value: AssertionValue>: CustomStringConvertible, AssertionManaging {
52 | struct ActiveAssertion {
BUILD FAILURE 6.3 android